Cylinder

class compas.geometry.Cylinder

Bases: Shape

A cylinder is defined by a frame, radius, and height.

The cylinder is oriented along the z-axis of the frame. The base point of the cylinder (i.e. the centre of the base circle) is at the origin of the frame. Half of the cylinder is above the local XY plane of the frame, the other half below.

Parameters:

radiusfloat

The radius of the cylinder.

heightfloat

The height of the cylinder along the z-axis of the frame. Half of the cylinder is above the XY plane of the frame, the other half below.

framecompas.geometry.Frame, optional

The local coordinate system, or “frame”, of the cylinder. Default is None, in which case the world coordinate system is used.

namestr, optional

The name of the shape.

Examples

>>> frame = Frame.worldXY()
>>> cylinder = Cylinder(frame=frame, radius=0.3, heigth=1.0)
>>> cylinder = Cylinder(radius=0.3, heigth=1.0)
>>> cylinder = Cylinder()

Attributes:

areafloat, read-only

The surface area of the cylinder.

axiscompas.geometry.Line, read-only

The central axis of the cylinder.

basecompas.geometry.Point, read-only

The base point of the cylinder. The base point is at the origin of the local coordinate system.

circlecompas.geometry.Circle, read-only

The base circle of the cylinder. The center of the circle is at the origin of the local coordinate system.

diameterfloat, read-only

The diameter of the base circle of the cylinder.

framecompas.geometry.Frame

The local coordinate system of the cylinder. The cylinder is oriented along the local z-axis.

heightfloat

The height of the cylinder.

planecompas.geometry.Plane, read-only

The plane of the cylinder. The base point of the plane is at the origin of the local coordinate system. The normal of the plane is in the direction of the z-axis of the local coordinate system.

radiusfloat

The radius of the base circle of the cylinder.

transformationcompas.geometry.Transformation

The transformation of the cylinder to global coordinates.

volumefloat, read-only

The volume of the cylinder.

Methods

contains_point	Verify if a point is inside the cylinder.
from_circle_and_height	Construct a cylinder from a circle and a height.
from_line_and_radius	Construct a cylinder from a line and a radius.
scale	Scale the cylinder by multiplying the radius and height by a factor.
to_brep	Returns a BRep representation of the cylinder.
to_vertices_and_faces	Returns a list of vertices and faces.

Inherited Methods

ToString	Converts the instance to a string.
compute_aabb	Compute the axis-aligned bounding box of the geometry.
compute_obb	Compute the oriented bounding box of the geometry.
contains_points	Verify if a list of points are inside the shape.
copy	Make an independent copy of the data object.
from_json	Construct an object of this type from a JSON file.
from_jsonstring	Construct an object of this type from a JSON string.
rotate	Rotate the shape.
rotated	Returns a rotated copy of this geometry.
scaled	Returns a scaled copy of this geometry.
sha256	Compute a hash of the data for comparison during version control using the sha256 algorithm.
to_json	Convert an object to its native data representation and save it to a JSON file.
to_jsonstring	Convert an object to its native data representation and save it to a JSON string.
to_polyhedron	Convert the shape to a polyhedron.
transform	Transform the shape.
transformed	Returns a transformed copy of this geometry.
translate	Translate the shape.
translated	Returns a translated copy of this geometry.
validate_data	Validate the data against the object's data schema.